WHAT KIND OF OIL DOES EVERYBODY USE? THE REASON I WAS ASKING WAS BECAUSE I WAS THINKING OF CHANGING AND WAS WONDERING WHAT WAS GOOD. I AM USING CASTROL HEAVY DUTY AND NOT REAL SURE IF ITS MADE FOR MY TRUCK SO I THOUGHT I MIGHT CHANGE.
I've used Shell Rotella-T 15W40, Mobil Delvac 1300 Super 15W40, and Shell Rotella-T 5W40 semi-synthetic. Still got at least one change of all three on-hand. Will be trying Schaeffer's 7000 15W40 and maybe Mobil Delvac-1 in the future. Any modern diesel oil with the proper ratings is fine. I prefer the 15W40 regular oils in the warm months and a synthetic in the colder ones. I've had excellent oil analysis results on all the brands that I've used so far.
Schaeffer's 7000 Supreme 15w40 Synthetic Blend. A shade under $13.00 a gallon at my local Schaeffer's dealer. Excellent product, reputation, and backed up with research. There are several sites out there with the research, just check via search engine.
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